Microsoft Excel 3 for Mac chart file
File type: Document file
A .xlc3 file is a chart file created by Microsoft Excel 3 for Mac.
It is a legacy chart-file format used by Microsoft Excel.
File type category:
Document file
Date updated: September 27, 2026
The .xlc3 file extension is associated with Microsoft Excel, Microsoft's spreadsheet application for creating and formatting spreadsheets, graphs, and other data.
.xlc3 files were used by Microsoft Excel 3 for Mac for chart files. The default file extension used by Microsoft Excel for charts is the xlc.
This format is specific to an early Macintosh version of Excel. It is no longer a normal file type in current versions of Microsoft Office for Mac or Microsoft Excel for Windows, which may not open it directly.
Open the file with Microsoft Excel 3 for Mac or another compatible legacy version of Excel. Current versions of Microsoft Office for Mac and Microsoft Excel for Windows may not support this format directly.
If the file does not open, try opening it in an older compatible Excel installation and then saving the chart or its associated workbook in a newer Excel format.
Open the file in a compatible legacy version of Microsoft Excel, then save the chart in a newer Excel format or export it as an image.
Software applications that handle other tasks involving xlc3 files:
Microsoft Windows
Apple macOS / Mac OS X
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